Glass-blocking machine.



'A. H. B0 S S 0N. GLASS BLOCKING MACHINE.

APPLICATION FILED'JUNE 9. I913.

Patented Feb. 127, 1917.

2 SHEETS-SHEET I;

A" .II 1

- INVENTOH A. H. BOSS-0N. GLASS BLOCKING MACHINE. APPLICATION FILED JUNE 9. 1913. Q

7 Patented Feb. 27, 1917 2 SHEETS-SHEET 2.

I mvzn'ron Atty-S AUGUST HENRY BOSSON, OF CHARLEROI, PENNSYLVANIA, ASSIGNOR TO MACBETH- EVANS GLASS COMPANY, OF PITTSBURGH; PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

GLASS-BLOCKING MACHINE.

Specification of Letters Patent.

Patented Feb. '27, 1917.

To all whom it may concern:

Be it known that I, AUGUST HENRY BossoN, a citizen ofthe United States, residing at Charleroi, in the county of Washington and State of Pennsylvania, have invented certain new and useful Improvements in Glass-Blocking Machines, of which the fol lowing is a specification.

This invention relates to a machine for shaping or blocking the glass gathered on the end of a pontil or blow-pipe in glass blowing operations.- My invention has reference primarily to the provision .of improved means for supporting the pontil and guiding the glass at the end thereof during the shaping operation.

The foregoing together with such other objects as may hereinafter appear, or are incident to my invention, I attain by means of a construction-illustrated in preferred form in the accompanying drawings wherein Figure 1 is a plan view of a device embodying my invention; Fig.2 is a side elevation and partial section of the device shown in Fig. 1; Fig. 3 is an enlarged perspective view of a shaping block; and Fig. 4 is a partial side elevation and section of a modi- I i,

fied form of the invention.

In carrying out my invention I provide a tank or receptacle 7 adapted'to contain a' cooling element, such as water. The tank is mounted on a suitable framework 8 to which is pivoted a treadle connected to a bell crank lever '10 by means of a connecting rod 11. The lever 10 is connected to one endof a similar bell crank lever.12 by the connecting rod 13, the other end of the lver '12 being connected to the arm 14 by means -of a connecting rod 15. Thearm 14c is'pivoted in a yoke 16 secui d to the tank 7, and is forked at its inner end as at 14. said forks being spaced apart by the plate 17. At theend each fork carries a forming block 18, preferably composed of maple orsome other hard wood. The blocks 18 have recesses of any form suitable to the particular work in hand. The arm 14 is normally held in theposition' indicated inFig. 2 by means .of the compression spring 19 mounted on the rod .20-which has a cl'evised engagement With the arm 14:. a

At the inner end of the'app'aratus is a frame 21 which is provided with a horizontallyextending slot 22 adapted to receive the ends ofa clamping member 23.- The clamping member 23 carries a' cylinder 24.

This cylinder may be adjusted vertically and horizontally by loosening the nuts 23 device in the. slot 22; :The cylinder 24 is provided with a piston 25 t 0 the upper end and shifting the position of .the clamping of which is secured a clevis 26 adapted to.

receive the blow-pipe '27. The piston isnormally heldinlraised position by means, of a light frame 28 mounted in the cylinder, androtation of the piston and clevis 26 is prevented by vmeans of the pin 29 which projects through slots 30 formed in the'sides of the cylinder (see Figs. 2 and 4') The.

spring 28 has strength suflicient to just carry the load 'of the blowipe 27.

The operation of t 1e device is as follows:

The shaper takes a1blow-pipe on which a portion of glass has been gathered, and

places it in the clevis 26 in .such' manner that .the glass gather rests in one 'ofthe mold blocks giving the shaper-the advantage of using both hands in revolving the. blowpipe. The blow-pipe is then turned to shape the gather, the shaper varying the angular inclination of the blow-pipe, as'maybe required, by pressing down on the blow-pipe and depressing the piston 25 against the pressure of the spring 28. After the glass has been shaped the blow-pipe is removed and the -treadle 9 pressed rdownwardl'yc'this movement of the. treadle causingthe inner end of the arm 14 to depress until the block 18 is immersed in the water in'the tank, through the medium of the bell crank levers and the operative connections above described, The immersing of the blocks 18' cools the latter and prevents the glass from greater uniformity in product and the shap ing can be more rapidly accomplished than in the hand methods at present used. The si'ipport provided for the blow-pipe facilitates the shaping of the glass and is of such a character as to adapt the machine for a variety of different operations. The pin 29 prevents the clevis from being turned out of operative position.

The device can save considerable labor, particularly with respect to the shaping of large gather for articles of considerable size, in the shaping of which. it has heretofore been customary to employ two men, one to hold the block and the other to turn the blow-pipe. By my device only one man is required, and he is not exposed to the heat of'the glass on the blow-pipe, as in previous methods. By providing the arm 14 with forks, two or more blocks for the va-' rious steps of the shaping operation, may be mounted on the same machine; It will be apparent that the blocks maybe changed at will, inasmuch as the blocksare merely stuck onto the points 32 .carried on the forks of the arm 14.

Referring to Fig. 4, it will be seen that the machine therein illustrated is of the same construction and has the same operation as that previously described, with the exception that the arm 14 ,is normally held in depressed position by means of the tension spring 33, and the bell crank levers are so arranged. that when the treadle 9 is moved downwardly the arm 14 is raised. The particular advantage of this construction resides in the fact that cooling of the blocks between successive operations is always insured. It will be clear that the double adjustment provided by making the blocks and the blow-pipe support movable, I

in combination a tank,'a bracket secured thereto, a block supporting arm, pivoted at one end to said bracket, a spring bearing against said bracket and said spring normally holding the arm in' raised position, a treadle and a connection from the treadle to said arm.

3. A glass blocking apparatuscomprising a pair of blocks, a blow-pipe support arranged adjacent thereto and providing a universal mounting for a blow-pipe,-and a blow-pipe removably supported in said support.

t. A glass blocking apparatus comprising in combination a block, a supporting arm therefor movably mounted, means for moving said arm, a blow-pipe support provided with means for adjusting it toward and away from the said block and mounted for rotary movement about a vertical axis and for vertical movement.

A glass blocking apparatus comprising in combination a tank, a block supporting arm pivotally supported on one end of said tank, a blow pipe support mounted on the other endof said tank, and means for moving'said arm operable from the said last end of the tank.

' 6. A glass blocking apparatus comprising in combination a tank, a block supporting arm pivotally supported on one end of said tank, a blow pipe support mounted on the other end of said tank, andoperating means for moving said arm extending to said last end of the tank.

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses AUGUST HENRY BOSSON. Witnesses:

O. R. PEREGRINE, F. W. PIEPER. 

